2results about How to "Wide spectral response range" patented technology

The application relates to a kind of cascade low-temperature single-photon detectors based on torsion semimetal materials, comprising: substrate, cascade structure and electrode;Wherein, the cascade structure is arranged on the substrate;The electrode is arranged on the cascade structure;The cascade structure is formed by the alternating stacking of dielectric layer and Dirac semimetal material;The outermost layer of the cascade structure from bottom to top and from top to bottom is the dielectric layer;The electrode includes a top gate electrode arranged at the top of the cascade structure and a plurality of source / drain metal contact electrodes arranged on the Dirac semimetal material.The beneficial effects of the application are: the Fermi level of the Dirac semimetal material used in the application is adjustable, the internal carrier concentration is controlled by the gate region, and the single-photon energy can excite to generate a photovoltage signal.